<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>Vue 测试实例 - 菜鸟教程(runoob.com)</title>
<script src="https://cdn.staticfile.org/vue/2.2.2/vue.min.js"></script>
</head>
<body>
<div id="app">
	<input v-model="msge">
			<button @click="seen=!seen">切换</button>
			<p v-if="seen">{{msge}}</p>
	        <p v-else></p>
		</div>
	<script> 
	new Vue({
  el: '#app',
  data: {
    seen: false,
	msge:""
  }
})
</script>
		
</body>
</html>